Stripping of Pu and Tc from tributyl phosphate solutions with carbohydrazide.

Autor:	Alekseenko, V., Marchenko, V., Dvoeglazov, K., Volk, V., Alekseenko, S., Bondin, V., Bychkov, S.
Předmět:	TECHNETIUM isotopes PLUTONIUM isotopes TRIBUTYL phosphate HYDRAZINE RADIOACTIVE tracers SOLUTION (Chemistry) TEMPERATURE TRACERS (Chemistry)
Zdroj:	Radiochemistry; May2012, Vol. 54 Issue 3, p247-252, 6p
Abstrakt:	Stripping of Pu from 30% tributyl phosphate solutions with carbohydrazide was studied. The degree of the Pu stripping drastically decreases with an increase in acidity and increases with an increase in the carbohydrazide concentration and in temperature. The Pu(IV) reduction rate in the two-phase system is sufficiently high to perform the reductive stripping of Pu with carbohydrazides both in mixer-settlers and in centrifugal extractors. Stripping of Tc at high phase ratio (O/W = 30) with carbohydrazide, hydrazine, and U(IV) in a mixture with hydrazine was studied. At low acidity (<1 M HNO) and 30-35°C, carbohydrazide allows more than 80% stripping of Tc from 30% TBP solutions even at high volume ratio of the phases. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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